RE: Query Question

Thanks to everybody that responded.
 
I ended up using a modified version of a query that was suggest by Mark:
 
select acc_sum.customer_name, acc_sum.total_amount, det.detail_item
from (select account_no, customer_name, sum(amount) total_amount from
accounts) acc_sum,
        details det
where acc_sum.account_no = det.account_no;


________________________________

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Hostetter, Jay M
Sent: Thursday, August 10, 2006 4:08 PM
To: Oracle-L_at_FreeLists.org
Subject: Query Question


I know there has to be a simple way to do this, but my brain can't put
it togther this afternoon.  I have a parent table (accounts) and a child
table (details).  I am creating a view that ties the two tables
together.  I would like a column in this view that shows a summary of a
column in the parent table - but I want this summary to be for each
distinct parent record - not the child records.
 
Here is my view:
 
create view test_view 
(customer_name,
amount,
detail_item)
as
(select customer_name,
sum(amount),
detail_item
from accounts a,
       details d
where a.account_no=d.account_no
group by customer_name;
 
Sample records from Accounts (Customer_name, Account_no, Amount):
Fred, 12345, 10
Fred, 45678, 15
 
Sample records from Details (Account_No, Detail_item, Description):
12345, Telephone, yaddayadda
12345, Call Forwarding, yaddayadda
45678, Cell Phone, yaddayadda
 
I would like my view to return (note the 25, which is a sum of the two
disting Amount values from Accounts):
Fred, 25, Telephone
Fred, 25, Call Forwarding
Fred, 25, Cell Phone
 
Instead, I am getting (note the 35, which is the sum of the amount
field, when joined with details, because the value 10 is duplicated due
to 2 child records for acocount 12345):
Fred, 35, Telephone
Fred, 35, Call Forwarding
Fred, 35, Cell Phone
 
In my view, the sum(amount) is summing for each row in the view.  I want
it to sum for each distinct account number.  I know that I can use
sum(distinct amount), but there is no guarantee that the amounts will
always be unique - the PK is the account number.
 
Thank you,
Jay


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